The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 13, 2011
Filed:
Dec. 29, 2010
Bingzhi Chen, Shanghai, CN;
Weiyi Cui, Piscataway, NJ (US);
LI Zhang, Shanghai, CN;
Caibin Xiao, Harleysville, PA (US);
Bingzhi Chen, Shanghai, CN;
Weiyi Cui, Piscataway, NJ (US);
Li Zhang, Shanghai, CN;
Caibin Xiao, Harleysville, PA (US);
General Electric Company, Schenectady, NY (US);
Abstract
Systems and methods are described for measuring pH of low alkalinity samples. The present invention provides a sensor array comprising a plurality of pH indicators, each indicator having a different indicator concentration. A calibration function is generated by applying the sensor array to a sample solution having a known pH such that pH responses from each indicator are simultaneously recorded versus indicator concentration for each indicator. Once calibrated, the sensor array is applied to low alkalinity samples having unknown pH. Results from each pH indicator are then compared to the calibration function, and fitting functions are extrapolated to obtain the actual pH of the low alkalinity sample.